Home / 13,742.60-20,613.90-8,817.80

Finding the Fourth Proportional to 13,742.60, 20,613.90 and 8,817.80

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Solution

The fourth proportional to 13,742.60, 20,613.90 and 8,817.80 is: 13,226.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,742.60 : 20,613.90 = 8,817.80 : x
  2. Step 2: Convert to fraction form
    13,742.60/20,613.90 = 8,817.80/x
  3. Step 3: Cross multiply
    13,742.60x = 20,613.90 × 8,817.80
  4. Step 4: Simplify right side
    13,742.60x = 181,769,247.42
  5. Step 5: Solve for x
    x = 181,769,247.42/13,742.60
  6. Step 6: Final answer
    x = 13,226.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.